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  • Near-UV Achromatic Lenses

Photonics Spectra
Apr 2010
Edmund Optics Inc.Request Info
Edmund Optics Inc.’s TechSpec near-UV achromatic lenses transmit in the 345- to 700-nm range and are designed to minimize the spot size for polychromatic illumination in the 345- to 550-nm region. They are suitable for use in fluorescence applications and for focusing UV light sources such as mercury arc lamps, UV LEDs and tripled Nd:YAG lasers. An alternative to air-spaced doublets and triplets in the UV, the lenses feature a cemented design and provide >90% transmission from 360 to 700 nm and >50% at 334 nm, with no spherical aberration or coma. They are available in 12.5-mm-diameter models in 25-, 30-, 40-, 50- and 60-mm effective focal lengths, and in 25-mm-diameter models with effective focal lengths of 50, 60, 75, 100 and 125 mm. All have a UV-VIS coating.


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The emission of light or other electromagnetic radiation of longer wavelengths by a substance as a result of the absorption of some other radiation of shorter wavelengths, provided the emission continues only as long as the stimulus producing it is maintained. In other words, fluorescence is the luminescence that persists for less than about 10-8 s after excitation.
polychromatic illumination
Light that is a mixture of wavelengths.
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